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Radiant|Lab Grown|IGI

11.50ct E VS1 Radiant Lab Grown Diamond

ID • E/VS1 • IGI LG851647840

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG851647840

Diamond specifications and retailer prices

From £10,023 GBP
$13,430 USD
As of October 31, 2026
Save £589 GBP (6%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £10,612 GBP at With Clarity · As of October 31, 2026
View at With Clarity

About this 11.5ct lab-grown radiant diamond

This 11.5ct lab-grown radiant sits in the over five carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG851647840 or 851647840. Listed at 2 retailers as of October 31, 2026, with a relatively tight 6% spread, which is unusual at this carat range and suggests competitive pricing across the listings. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

11.50
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.3°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851647840
Dimensions16.08 × 11.04 × 7.48 mm
L/W Ratio1.46
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
16.08 mm11.04 mm11.50 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851647840
Side View
Table 64.0%Crown 40.3°Girdle: Slightly ThickPavilion 35.2°Culet: NoneDepth 67.8%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: £10,023 GBP|Low: £10,023 GBP|High: £10,612 GBP|Avg: £10,219 GBP
Retailer 1
With Clarity
October 31, 2026
Retailer 1£10,023 GBP
With Clarity£10,612 GBP

2 data points across 2 retailers

2 retailers£10,023 GBP to £10,612 GBP

B
Cheapest Retailer
-
£10,023 GBP
$13,430 USD
Most Expensive
B
With Clarity
851647840 · Oct 31
£10,612 GBP
$14,219 USD
View
1 more retailer has this diamond
Prices start from £10,023 GBPSave up to £589 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
11.50ct Radiant
£10,023 GBP